Let r = usual driving rate
let t = usual driving time
We need to figure out t
The distance she covers in her usual time at her usual rate is r*t
The distance she covers in her new time at her new rate is:
(1+t)*((2/3)r)
Set this equal to each other and solve for t.
rt = (2/3)r + (2/3)rt
(1/3)rt = (2/3)r
(1/3)t = (2/3)
t = 2
So her usual time is 2 hours. (There's probably a faster way to do this)
Answer:
Your answer is B.
Step-by-step explanation:
Since the origin is 0, start at 0.
Next, since the x coordinate is always first, we would move left 3, as the numbers on the left are negative.
Next, we would move up 7 from that point, and that is where the point (-3, 7) is located on a coordinate grid.
I hope this helps! :)
Answer:
Step-by-step explanation:
Comment and answer
ABC is similar to XBY The triangles are similar because
- B is a common angle to both
- <A = <BXY AB is a transversal cutting 2 parallel lines
- <C = <BYX BC is a transversal cutting 2 parallel lines
BX = 2 Given
XA = 3 Given
BY = 3 Given
YC = x Object of question
BX/(BX + XA) = BY / (BY + YC) Parts of two similar triangles
2/(2 + 3) = 3/(3+ x) Combine the left
2/5 = 3/(3 + x) Cross Multiply
2*(3 + x) = 3*5 Remove the brackets
6 + 2x = 15 Subtract 6 from both sides
6-6+2x = 15 - 6 Combine
2x = 9 Divide by 2
2x/2 = 9/2
x = 4.5
Answer
x = 4.5 or D
A=18 !!! i hope this helps!
Answer:
4√14
Step-by-step explanation:
assuming 15 is the hypotenuse